Author: Clarence J. EhlersPublisher:
ISBN:
Category : Soil moisture
Languages : en
Pages : 156
Book Description
The Nuclear Method of Soil-moisture Determination at Depth
Author: Clarence J. EhlersPublisher:
ISBN:
Category : Soil moisture
Languages : en
Pages : 156
Book Description
Symposium on Nuclear Methods for Measuring Soil Density and Moisture
Author: ASTM Committee D-18 on Soils for Engineering PurposesPublisher: ASTM International
ISBN:
Category : Nuclear physics
Languages : en
Pages : 113
Book Description
Selected Water Resources Abstracts
Author: Density and Moisture Content Measurements by Nuclear Methods
Author: Robin P. GardnerPublisher:
ISBN:
Category : Radioactive gages
Languages : en
Pages : 56
Book Description
Sources of error that have been identified on the gamma-ray soil density gauge are: (1) sensitivity to local density variations, especially at the soil surface, (2) sensitivity to soil composition, and (3) inaccurate calibration techniques. An attempt was made to solve these problems by developing for each gauge calibration models that enable stable and homogenous non-soil standards to be used for calibration. Calibration standards and calibration models for each gauge were found and tested. In the process of developing and testing the new nuclear gauge calibration model, the dual-gauge principal of compensating these gauges for variations in soil composition was discovered. The air-gap method of using this principal is explained and was optimized by using the calibration model developed in the current study.
Selected Water Resources Abstracts
Author: Instrumentation for Measurement of Moisture
Author: L. F. BallardPublisher: Highway Research Board
ISBN:
Category : Science
Languages : en
Pages : 632
Book Description
The objective of this study was to evaluate the suitability of existing instrumentation and techniques and to stimulate development of modified or new procedures to measure the amount and state of water in highway components, such as embankments, subgrades, base courses, pavements, and structures. In accomplishing this objective, the researchers conducted an extensive literature review. Those techniques that appear to be immediately applicable to highway problems were evaluated using a linear decision model for comparing instrument performance characteristics with specific moisture measurement needs. A comprehensive list of performance characteristics with which to make this comparison was compiled.
WES Microthesaurus of Scientific and Technical Terms
Author: Waterways Experiment Station (U.S.)Publisher:
ISBN:
Category : Science
Languages : en
Pages : 610
Book Description
Nuclear Science Abstracts
Author: Advances in Agronomy
Author: Publisher: Academic Press
ISBN: 0080563279
Category : Technology & Engineering
Languages : en
Pages : 445
Book Description
Advances in Agronomy
Field Correlation of Two Neutron-scattering Soil Moisture Meters
Author: John D. SchultzPublisher:
ISBN:
Category : Neutron soil moisture meters
Languages : en
Pages : 8
Book Description